A method, a terminal, and a storage medium for configuring a discontinuous reception period

Abstract

Embodiments of the present application disclose a method, a terminal, and a storage medium for configuring a discontinuous reception period, including: if a physical sidelink feedback channel to be received is within a dormant period of the discontinuous reception period of a first terminal, the first terminal adjusts the discontinuous reception period, where the physical sidelink feedback channel carries hybrid automatic repeat request information of a second terminal in response to a physical sidelink shared channel, and the physical sidelink shared channel is a sidelink shared channel sent by the first terminal to the second terminal; the first terminal receives the physical sidelink feedback channel. By adjusting the discontinuous reception period, the terminal can successfully receive the physical sidelink feedback channel, avoid unnecessary retransmissions, reduce latency, and improve the reliability of the system.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a method, a terminal, and a storage medium for configuring a discontinuous reception period. Background Art

[0002] In the global 5G standard 5G New Radio (NR), a new air interface based on OFDM, and the Long Term Evolution (LTE) communication system, the data transmission is ensured through the Hybrid Automatic Repeat reQuest (HARQ) mechanism. For the communication Uu link between a user equipment and a base station, the base station may send Physical Downlink Control Channel (PDCCH) information and indicate the Physical Downlink Shared Channel (PDSCH), or directly send the PDSCH. The User Equipment (UE) reports the HARQ-ACK information on whether the PDSCH is correctly received to the base station on the uplink resources scheduled by the base station according to the received data. The HARQ-ACK information includes two types, Acknowledgement (ACK) and Negative Acknowledgement (NACK). When the UE receives and successfully decodes the PDSCH, it sends the ACK information; when the UE receives the PDCCH but fails to successfully decode the PDSCH or does not receive the PDSCH, it sends the NACK. At this time, after receiving the NACK, the base station will retransmit the PDSCH. If the UE does not receive the downlink PDCCH for scheduling the PDSCH that has been sent or the downlink PDCCH is incorrectly decoded, the UE does not report any feedback information. If the base station does not receive the information, it is considered that the UE is in the Discontinuous Transmission (DTX) state, and the base station will also retransmit the PDSCH.

[0003] In a 5G sidelink communication system, the Hybrid Automatic Repeat reQuest (HARQ) mechanism is also applied to sidelink communication. After a first terminal sends a Physical Sidelink Shared Channel (PSSCH) and a Physical Sidelink Control Channel (PSCCH) to a second terminal, the second terminal will feedback HARQ information to the first terminal on a Physical Sidelink Feedback Channel (PSFCH) to confirm whether it has received or decoded the PSSCH sent by the first terminal. The propagation types of sidelink communication include unicast, multicast, and broadcast. In unicast and multicast scenarios, if HARQ feedback is enabled, the second terminal needs to feedback HARQ information to the first terminal, that is, there can be more than one second terminal in the multicast scenario. In the resource allocation mode, the resources of the sidelink are allocated by the base station. At this time, the first terminal also needs to report HARQ information to the base station to obtain resources for retransmitting the PSCCH and PSSCH on the sidelink.

[0004] The introduction of the Discontinuous Reception (DRX) mechanism is to reduce the power consumption of the User Equipment (UE) and extend the battery life. As Figure 1 shown, in the time domain, it can be divided into continuous Discontinuous Reception cycles (DRX cycles). The Discontinuous Reception cycle (DRX cycle) can include an active period (On Duration) and a dormant period (opportunity for DRX). During the active period, the terminal can normally receive channels and signals; during the dormant period, the terminal will not receive or detect channels or signals to maintain a low power consumption state. In the NR Uu link, in the active period state, the UE listens for and receives the Physical Downlink Control Channel (PDCCH); during the dormant period, the UE does not receive the PDCCH to reduce power consumption.

[0005] In the prior art, the user equipment does not receive the PDCCH during the dormant period, and the Discontinuous Reception cycle (DRX cycle) of the user equipment is indicated by the base station, and the user equipment cannot adjust it by itself. This results in the user equipment not receiving all sidelink channels during the dormant period, such as the feedback channel. Moreover, for user equipment with different configurations of each Discontinuous Reception cycle (DRX cycle), the time of their respective active periods may be different, which will cause communication obstacles between devices. Summary of the Invention

[0006] Embodiments of the present application provide a method, a terminal, and a storage medium for configuring a Discontinuous Reception cycle, which can avoid unnecessary retransmissions, reduce latency, and improve system reliability.

[0007] A first aspect of the embodiments of the present application provides a method for configuring a discontinuous reception period, including: if the upcoming physical sidelink feedback channel is within the dormant period of the discontinuous reception period of the first terminal, the first terminal adjusts the discontinuous reception period, where the physical sidelink feedback channel carries hybrid automatic repeat request information of the second terminal in response to the physical sidelink shared channel, and the physical sidelink shared channel is a sidelink shared channel sent by the first terminal to the second terminal; the first terminal receives the physical sidelink feedback channel.

[0008] It should be noted that the adjustment of the discontinuous reception period described in the embodiments of the present application may be to adjust the active period of the discontinuous reception period, such as adjusting the duration and / or start position of the active period, or switching the DRX state, etc. The embodiments of the present application do not make specific limitations on this.

[0009] Through the embodiments of the present application, when the physical sidelink feedback channel to be received is within the dormant period of the discontinuous reception period of the terminal, the terminal adjusts the discontinuous reception period, thereby successfully receiving the physical sidelink feedback channel. Among them, by switching the DRX state or extending the DRX active time, it is ensured that the PSFCH can be received, avoiding the missed detection of the PSFCH caused by the DRX off state, avoiding unnecessary retransmissions, reducing latency, and improving the reliability of the system.

[0010] Among them, the first terminal adjusts the discontinuous reception period, including the first terminal adjusting the active period of the discontinuous reception period. Specifically, the first terminal triggers a first timer no later than the start time of the physical sidelink feedback channel. During the timing time range of the first timer, the first terminal is in the active period of the discontinuous reception period, and the timing time range of the first timer is not less than the time domain resource length of the physical sidelink feedback channel. It should be understood that the time domain resource length of the physical sidelink feedback channel represents the number of continuous or discontinuous time domain resources occupied in the time domain, including but not limited to the number of OFDM symbols, the number of time slots, the number of subframes, the number of radio frames, etc. Alternatively, the first terminal adjusts the discontinuous reception period by switching to the DRX state, specifically including: the first terminal triggers a first timer no later than the start time of the physical sidelink feedback channel, and during the timing time range of the first timer, the first terminal can receive any one of the physical sidelink feedback channel, the physical sidelink feedback channel and the physical sidelink control channel, and the physical sidelink feedback channel and the physical sidelink shared channel.

[0011] Among them, before the first terminal triggers the first timer, the first terminal is in the dormant period of the discontinuous reception period.

[0012] Before the first terminal adjusts the discontinuous reception period, the method further includes: the first terminal confirming that the interval between the end moment of the active period of the discontinuous reception period and the start moment of the physical sidelink feedback channel is greater than a first threshold. The first threshold may correspond to the number of OFDM symbols, the number of time slots, the number of subframes, the number of radio frames, etc., and no specific limitation is made here.

[0013] Wherein, before the first terminal triggers the first timer, the first terminal is within the active period of the discontinuous reception period.

[0014] Further, before the first terminal adjusts the discontinuous reception period, the method further includes: the first terminal confirming that the interval between the end moment of the active period of the discontinuous reception period and the start moment of the physical sidelink feedback channel is not greater than the first threshold.

[0015] A second aspect of the embodiments of the present application provides a method for configuring a discontinuous reception period, including: a first terminal sending a physical sidelink control channel and a physical sidelink shared channel to a second terminal; the first terminal receiving K physical sidelink feedback channels, where the physical sidelink feedback channels carry hybrid automatic repeat request information of the second terminal in response to the physical sidelink shared channel, and K is an integer greater than 1; the first terminal determining the activation time of the second terminal according to the reception time of the K physical sidelink feedback channels; the first terminal sending the physical sidelink control channel and the physical sidelink shared channel according to the activation time of the second terminal.

[0016] In the embodiments of the present application, the first terminal can determine the activation time of the second terminal through the feedback information sent by the second terminal, and then the first terminal adjusts its own DRX cycle so as to receive the message sent by the second terminal. By adopting this means, it is possible to avoid missed detection of the PSFCH caused by the DRX sleep period, thereby avoiding unnecessary retransmissions, reducing latency, and improving the reliability of the system. Among them, the above-mentioned second terminal can be one or more. For example, the first terminal uses unicast or multicast to send the physical sidelink shared channel and the physical sidelink control channel.

[0017] Wherein, the first terminal sending the physical sidelink control channel and the physical sidelink shared channel according to the activation time of the second terminal includes: the first terminal adjusting the discontinuous reception period of the first terminal according to the activation time of the second terminal so that the first terminal can receive the message sent by the second terminal.

[0018] Further, an embodiment of the present application further provides a method for configuring a discontinuous reception period, including: a first terminal sending a physical sidelink control channel and a physical sidelink shared channel to a second terminal; the first terminal receiving K physical sidelink feedback channels, where the physical sidelink feedback channels carry hybrid automatic repeat request information of the second terminal in response to the physical sidelink shared channel, and K is an integer greater than 1; the first terminal determining an activation time of the second terminal according to reception times of the K physical sidelink feedback channels.

[0019] A third aspect of an embodiment of the present application provides a method for configuring a discontinuous reception period, including: a first terminal sending a first message to M second terminals, where the first message carries discontinuous reception period information of the first terminal, so that any one of the M second terminals sends a second message to the first terminal according to the discontinuous reception period information of the first terminal, and M is a positive integer.

[0020] In an embodiment of the present application, a terminal sends its own DRX cycle so that other terminals can know its DRX cycle information, thereby ensuring sidelink communication between different terminals.

[0021] Wherein, the first message is a master system information block MIB message; or, the first message is a system information block SIB message.

[0022] When M is 1, the first message is a PC5-RRC message.

[0023] A fourth aspect of an embodiment of the present application provides a method for configuring a discontinuous reception period, including: a second terminal receiving a first message sent by a first terminal, where the first message carries discontinuous reception period information of the first terminal; the second terminal sending a second message to the first terminal according to the discontinuous reception period information of the first terminal.

[0024] A fifth aspect of an embodiment of the present application provides a first terminal for configuring a discontinuous reception period. The first terminal is configured to: if a physical sidelink feedback channel to be received is within a dormant period of a discontinuous reception period of the first terminal, adjust the discontinuous reception period, where the physical sidelink feedback channel carries hybrid automatic repeat request information of a second terminal in response to a physical sidelink shared channel, and the physical sidelink shared channel is a sidelink shared channel sent by the first terminal to the second terminal; receive the physical sidelink feedback channel.

[0025] Wherein, when adjusting the discontinuous reception period, the first terminal is specifically configured to: trigger a first timer no later than the start time of the physical sidelink feedback channel, wherein within the timing range of the first timer, the first terminal is in the active period of the discontinuous reception period, and the timing range of the first timer is not less than the time domain resource length of the physical sidelink feedback channel.

[0026] Alternatively, when adjusting the discontinuous reception period, the first terminal is specifically configured to: trigger a first timer no later than the start time of the physical sidelink feedback channel, wherein within the timing range of the first timer, the first terminal can receive any one of the physical sidelink feedback channel, the physical sidelink feedback channel and the physical sidelink control channel, and the physical sidelink feedback channel and the physical sidelink shared channel.

[0027] Wherein, before the first terminal triggers the first timer, the first terminal is in the sleep period of the discontinuous reception period.

[0028] Wherein, before adjusting the discontinuous reception period, the first terminal is further configured to: confirm that the interval between the end time of the active period of the discontinuous reception period and the start time of the physical sidelink feedback channel is greater than a first threshold.

[0029] Before the first terminal triggers the first timer, the first terminal is in the active period of the discontinuous reception period.

[0030] Before adjusting the discontinuous reception period, the first terminal is further configured to: confirm that the interval between the end time of the active period of the discontinuous reception period and the start time of the physical sidelink feedback channel is not greater than a first threshold.

[0031] A sixth aspect of the embodiments of the present application provides a first terminal for configuring a discontinuous reception period. The first terminal is configured to: send a physical sidelink control channel and a physical sidelink shared channel to a second terminal; receive K physical sidelink feedback channels, where the physical sidelink feedback channel carries hybrid automatic repeat request information of the second terminal in response to the physical sidelink shared channel, and K is an integer greater than 1; determine the activation time of the second terminal according to the reception time of the K physical sidelink feedback channels; and send the physical sidelink control channel and the physical sidelink shared channel according to the activation time of the second terminal.

[0032] Wherein, when sending the physical sidelink control channel and the physical sidelink shared channel according to the activation time of the second terminal, the first terminal is specifically configured to: adjust the discontinuous reception period of the first terminal according to the activation time of the second terminal so that the first terminal can receive the message sent by the second terminal.

[0033] The seventh aspect of the embodiments of the present application provides a first terminal for configuring a discontinuous reception period. The first terminal is configured to: send a first message to M second terminals, where the first message carries the discontinuous reception period information of the first terminal, so that any one of the M second terminals can send a second message to the first terminal according to the discontinuous reception period information of the first terminal, and M is a positive integer.

[0034] Wherein, the first message is a master system information block MIB message; or, the first message is a system information block SIB message.

[0035] When M is 1, the first message is a PC5-RRC message.

[0036] The eighth aspect of the embodiments of the present application provides a second terminal for configuring a discontinuous reception period. The second terminal is configured to: receive a first message sent by a first terminal, where the first message carries the discontinuous reception period information of the first terminal; and send a second message to the first terminal according to the discontinuous reception period information of the first terminal.

[0037] The ninth aspect of the embodiments of the present application provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements the method described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings related to the embodiments of the present application or the background art will be briefly introduced below.

[0039] Figure 1 It is a schematic diagram of a discontinuous reception period in the prior art;

[0040] Figure 2 It is a flowchart of a method for configuring a discontinuous reception period provided by the embodiments of the present application;

[0041] Figure 3 It is a schematic diagram of a discontinuous reception period provided by the embodiments of the present application;

[0042] Figure 4 It is a schematic diagram of a discontinuous reception period provided by the embodiments of the present application;

[0043] Figure 5 It is a schematic diagram of a discontinuous reception period provided by the embodiments of the present application;

[0044] Figure 6 It is a schematic diagram of a discontinuous reception period provided by the embodiments of the present application;

[0045] Figure 7 A flowchart of a method for configuring a discontinuous reception period provided by an embodiment of the present application;

[0046] Figure 8 A schematic diagram of configuring a discontinuous reception period provided by an embodiment of the present application;

[0047] Figure 9 A schematic diagram of information transmission provided by an embodiment of the present application. Detailed implementation manners

[0048] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0049] In the prior art, when the terminal is in the sleep period of discontinuous reception (DRX), although power consumption can be saved by not receiving any channels or signals, in the sidelink, the user equipment (UE) still needs to receive the physical sidelink control channel (PSCCH) for resource sensing and selection, and also needs to receive the physical sidelink feedback channel (PSFCH) to determine whether the transmitted data is correctly received, so as to judge whether the data needs to be retransmitted. Therefore, embodiments of the present application provide that in sidelink (SL) communication, DRX has multiple different states, which are used to indicate which channels or signals are not received or received during the DRX sleep period. Among them, by setting multiple states and only receiving specific channels or signals, a balance between power consumption and system performance can be achieved, the accuracy of resource sensing can be improved, and the probability of resource collision between different user equipments (UEs) can be reduced; on the other hand, the missed detection of PSFCH caused by DRX can be reduced, unnecessary retransmissions can be avoided, the delay can be reduced, and the system reliability can be improved.

[0050] The following introduces the DRX with different states provided by this solution.

[0051] Among them, as shown in Table 1, the channels / signals received and detected by DRX in different states during the sleep period are as follows:

[0052] Table 1

[0053] DRX Status Do not receive detection channels / signals during the dormant period Receive detection channels / signals during the dormant period State 1 PSCCH + PSSCH + PSFCH -- State 2 PSCCH + PSSCH PSFCH State 3 PSSCH + PSFCH PSCCH State 4 PSSCH PSCCH + PSFCH

[0054] Among them, only four states are taken as examples for illustration above, and the above DRX states also include other states, such as State Five, receiving and detecting channels / signals physical sidelink shared channel (PSSCH)+PSCCH during the sleep period; or State Six, PSSCH+PSFCH, etc. This solution does not make specific limitations on this.

[0055] Furthermore, this solution also provides the ability to define different power modes according to the received detection channel type to determine which energy-saving mode the terminal is in, as shown in Table II.

[0056] Table II

[0057] Energy-saving status Do not receive detection channels / signals Receive detection channels / signals State 1 PSCCH + PSSCH + PSFCH -- State 2 PSCCH + PSSCH PSFCH State 3 PSSCH + PSFCH PSCCH State 4 PSSCH PSCCH + PSFCH

[0058] Among them, Table II only uses the above four states as examples for illustration. The above energy-saving states may also include State Five, not receiving the detection channel / signal PSCCH + PSFCH; State Six, not receiving the detection channel / signal PSCCH; State Seven, not receiving the detection channel / signal PSFCH, etc. This solution does not make specific limitations on this.

[0059] On the other hand, this solution also provides the ability to define different power modes according to the number of received detection channels to determine which energy-saving mode the terminal is in, as shown in Table III.

[0060] Table III

[0061] Energy-saving status Receive detection channels / signals Number of channels State 1 PSCCH X1 State 2 PSCCH X2

[0062] Among them, the above X1 and X2 are both positive integers, and X1 is not equal to X2. The above only uses receiving the detection channel / signal PSCCH as an example for illustration, and the received detection channel / signal may also be PSFCH, PSSCH, or a combination of PSCCH + PSSCH, PSSCH + PSFCH, PSCCH + PSFCH, etc. No specific limitations are made here.

[0063] By determining different DRX states or energy-saving states as above, the terminal device can ensure sidelink communication while saving energy, avoid redundant retransmissions, and reduce the probability of resource collisions during resource selection. Compared with the prior art where all dynamically scheduled channels are not received during the DRX sleep period, this solution receives some channels in the DRX state, which can improve the accuracy of sensing resources and avoid unnecessary retransmissions.

[0064] Next, the implementation method of configuring the discontinuous reception period provided by the embodiments of this application will be specifically introduced.

[0065] When the terminal device sends data, it can be in the DRX active period or the sleep period. When the terminal device is sending data, it can obtain on which specific time-frequency positions to receive the physical sidelink feedback channel PSFCH according to the current configuration of the resource pool. When this time-frequency position is not within the DRX active period of the terminal device, the terminal device will not receive the corresponding feedback information. Therefore, the embodiments of this application provide a method for configuring the discontinuous reception period, which can achieve the purpose of receiving the corresponding feedback information by adjusting the DRX state or the window length of the active period.

[0066] Referring to Figure 2 as shown, which is a schematic flowchart of a method for configuring a discontinuous reception period provided by an embodiment of the present application. It includes:

[0067] 201. If the upcoming physical sidelink feedback channel is within the dormant period of the discontinuous reception period of the first terminal, the first terminal adjusts the discontinuous reception period, where the physical sidelink feedback channel carries hybrid automatic repeat request information of the second terminal in response to the physical sidelink shared channel, and the physical sidelink shared channel is a sidelink shared channel sent by the first terminal to the second terminal;

[0068] Specifically, the first terminal sends a physical sidelink shared channel PSSCH to the second terminal; where the second terminal, in response to the above physical sidelink shared channel, sends hybrid automatic repeat request information HARQ to the first terminal. The physical sidelink feedback channel PSFCH carries the hybrid automatic repeat request information HARQ of the second terminal in response to the physical sidelink shared channel PSSCH.

[0069] Wherein, when the upcoming (to-be-received) physical sidelink feedback channel PSFCH is within the dormant period of the discontinuous reception period of the first terminal, the first terminal adjusts the discontinuous reception period so as to be able to receive the physical sidelink feedback channel PSFCH.

[0070] It should be noted that the adjustment of the discontinuous reception period described in the embodiments of the present application may be to adjust the active period of the discontinuous reception period, such as adjusting the duration and / or start position of the active period, or switching the DRX state, etc. The embodiments of the present application do not make specific limitations on this.

[0071] As a first optional implementation manner, the adjustment of the discontinuous reception period by the first terminal includes:

[0072] The first terminal triggers a first timer no later than the start time of the physical sidelink feedback channel, where within the timing time range of the first timer, the first terminal is within the active period of the discontinuous reception period, and the timing time range of the first timer is not less than the time domain resource length of the physical sidelink feedback channel.

[0073] That is to say, when receiving the physical sidelink feedback channel, the terminal is in the active period of the discontinuous reception cycle. During the active period, the terminal can receive any sidelink channel, including PSCCH, PSSCH, PSFCH, and physical sidelink broadcast channel (PSBCH). Among them, no later than the start time of the physical sidelink feedback channel, the first terminal is in the active period of the discontinuous reception cycle to ensure that the physical sidelink feedback channel can be received. At the same time, the duration of the first terminal in the active period of the discontinuous reception cycle is not less than the time-domain resource length of the physical sidelink feedback channel, that is, not less than the time when the first terminal finishes receiving the physical sidelink feedback channel, to ensure the complete reception of the physical sidelink feedback channel. By adopting this means, successful reception of the physical sidelink feedback channel PSFCH can be achieved. It should be understood that the time-domain resource length of the physical sidelink feedback channel represents the number of continuous or discontinuous time-domain resources occupied in the time domain, including but not limited to the number of OFDM symbols, the number of time slots, the number of sub-frames, the number of radio frames, etc.

[0074] Specifically, as Figure 3 shown, the terminal device can start entering the active period no later than the start time of the PSFCH. In order to complete the reception of the PSFCH, it is also necessary to set the time length of the terminal device in the active period. Among them, a first timer Timer 1 is triggered no later than the start time of the physical sidelink feedback channel, and the timing time range of Timer 1 is not less than the time-domain resource length of the physical sidelink feedback channel. Among them, Timer 1 can be configured by higher-layer signaling.

[0075] Specifically, before the first terminal triggers the first timer, the first terminal can be in the dormant period of the discontinuous reception cycle. The terminal device triggers the first timer Timer 1 no later than the start time of the PSFCH and starts entering the active period.

[0076] Alternatively, before the first terminal triggers the first timer, the first terminal can be in the active period of the discontinuous reception cycle. Among them, according to the DRX configuration, if it is already outside the active period when receiving the PSFCH, the terminal device can also directly extend the duration of the active period, as Figure 4 shown. Among them, the extended duration can be determined by Timer1, and the specific value can be configured by higher-layer parameters. Among them, by extending the active period, the terminal can successfully receive the physical sidelink feedback channel PSFCH.

[0077] Specifically, before the first timer is triggered by the first terminal, the first terminal may be in the active period of the discontinuous reception cycle. The terminal device triggers the first timer Timer 1 no later than the start time of the PSFCH and is in the extended active period.

[0078] As a second optional implementation, the adjustment of the discontinuous reception cycle by the first terminal includes:

[0079] The first terminal triggers the first timer no later than the start time of the physical side link feedback channel. During the timing range of the first timer, the first terminal can receive any one of the physical side link feedback channel, the physical side link feedback channel and the physical side link control channel, and the physical side link feedback channel and the physical side link shared channel.

[0080] This solution does not specifically limit the above channel types. It can receive only one channel or two channels, etc.

[0081] That is to say, when receiving the physical side link feedback channel, the terminal is in a state where it can receive any one of the physical side link feedback channel PSFCH (such as state two in Table 1), the physical side link feedback channel and the physical side link control channel PSFCH+PSCCH (such as state four in Table 1), and the physical side link feedback channel and the physical side link shared channel PSFCH+PSSCH.

[0082] As Figure 5 shown, the terminal device enters DRX state two no later than the start time of the PSFCH. At this time, in DRX state two, the terminal device only receives the PSFCH and does not receive other side link channels. In order to complete the reception of the PSFCH, the time length of the terminal device in DRX state two needs to be set. For example, the first timer Timer 1 is triggered no later than the start time of the physical side link feedback channel, and the timing range of Timer 1 is not less than the time length for the first terminal to receive the physical side link feedback channel. Among them, Timer 1 can be configured by high-layer signaling. Among them, as Figure 5 shown, before the terminal triggers the first timer, the terminal may be in the sleep period of the discontinuous reception cycle. There can be multiple relationships between the time of Timer 1 and the configured active period. For example, the end time of state two can have a certain interval from the start time of the configured active period. At this time, the device can enter the sleep period again; or, the end time of state two can exactly connect with the start time of the configured active period, that is, the end time of DRX state two is exactly the start time of the DRX active period; or, the end time of state two can overlap with the configured active period, that is, state two has not ended yet and the device has entered the active period, etc. This solution does not specifically limit this.

[0083] Alternatively, as Figure 6 shown, the terminal device can enter DRX state 2 after the activation period ends. That is to say, after the activation period ends, the terminal triggers Timer1 and enters state 2, where the duration of the terminal in state 2 can be determined by Timer1, and the specific value of Timer 1 can be configured by a higher-layer parameter. For example, the time length of Timer 1 is not less than the time-domain resource length of the physical side line feedback channel, that is, not less than the duration for the terminal device to receive the PSFCH.

[0084] It should be noted that Timer1 in the above various implementation manners can be the same or different, and no specific limitation is made here.

[0085] Furthermore, before adjusting the discontinuous reception period, the first terminal in this solution can first confirm whether the interval between the end moment of the activation period of the discontinuous reception period and the start moment of the physical side line feedback channel is greater than a first threshold. Among them, if the interval is not greater than the first threshold, reception can be achieved by further extending the activation period within the activation period; or reception can be achieved by entering DRX state 2 after the activation period ends. For details, please refer to Figure 4 、 Figure 6 the description, which will not be elaborated here.

[0086] Among them, the value range of Timer1 can be 1 to 32 positive integer time slots, etc. Alternatively, the numerical value of Timer 1 can also be determined according to one or more of the following parameters, such as the (feedback) minimum time interval T minigap : used to determine the minimum time interval between the PSSCH and the PSFCH; PSFCH period: the period of the PSFCH feedback resource; adjustment coefficient k: used to adjust the length of the time interval.

[0087] Among them, according to the minimum time interval and the period of the PSFCH feedback resource, it can be determined that there will be feedback resources after at most T time slots. Then, according to different minimum time interval ratios and PSFCH periods, the value of the time slot number T can be determined, as shown in Table 4:

[0088] Table 4

[0089]

[0090] That is to say, within the time length corresponding to the time slot number T, there is at least one PSFCH resource. Among them, the time length of Timer1 can be expressed as:

[0091] L timer = k × T;

[0092] Among them, the value of K can be an integer between 1 and 8, and can be specifically indicated by high-layer parameters or dynamic signaling.

[0093] On the other hand, the length of Timer1 is an integer multiple of the number of PSFCH time-domain resources and can be expressed as:

[0094] L timer = k'×L PSFCH ;

[0095] Among them, L PSFCH is the number of time-domain resources. For example, L PSFCH is 2 PSFCH symbols. For example, k' is a positive integer between 1 and 84. Among them, if the interval between the end time of the active period of the discontinuous reception cycle confirmed by the first terminal and the start time of the physical side row feedback channel is greater than the first threshold, reception can be achieved by entering the DRX state during the sleep period; or reception can be achieved by ending the sleep period and entering the active period. For specific details, reference can be made to Figure 3 、 Figure 5 , and details are not described herein again.

[0096] The method for configuring a discontinuous reception cycle DRX cycle provided by the embodiments of the present application, where the discontinuous reception cycle is specifically configured according to high-layer signaling or dynamic signaling, may include some or all of the following information: the time or proportion of the active period, the time or proportion of the sleep period, and the time of the discontinuous reception cycle.

[0097] After data is sent, if the corresponding feedback channel is not within the active period of the terminal device, the terminal device may start receiving the PSFCH not later than the start time of the PSFCH.

[0098] It should be noted that the start time and end time, etc. in the present application are only exemplary descriptions, and they may also be start symbols or end symbols, or time slots, subframes, system frames, etc. where the start symbols or end symbols are located.

[0099] 202. The first terminal receives the physical side row feedback channel.

[0100] By adjusting the discontinuous reception cycle, the first terminal can achieve receiving the physical side row feedback channel.

[0101] According to the embodiments of the present application, when the physical sidelink feedback channel to be received is within the dormant period of the discontinuous reception period of the terminal, the terminal adjusts the discontinuous reception period, thereby achieving successful reception of the physical sidelink feedback channel. Among them, by switching the DRX state or extending the DRX activation time, it is ensured that the PSFCH can be received, avoiding missed detection of the PSFCH caused by the DRX dormant period, avoiding unnecessary retransmissions, reducing latency, and improving the reliability of the system.

[0102] As Figure 7 shown, the embodiments of the present application also provide a method for configuring a discontinuous reception period. The first terminal can determine the discontinuous reception period of the second terminal through feedback information. It includes:

[0103] 701. The first terminal sends a physical sidelink control channel and a physical sidelink shared channel to the second terminal;

[0104] Among them, the above-mentioned second terminal can be one or more, and this solution does not make specific limitations. For example, the first terminal uses unicast, or multicast, etc. to send the physical sidelink shared channel and the physical sidelink control channel.

[0105] 702. The first terminal receives K physical sidelink feedback channels, and the physical sidelink feedback channel carries the hybrid automatic repeat request information of the second terminal in response to the physical sidelink shared channel, where K is an integer greater than 1;

[0106] For example, when working in DRX state two, at this time the first terminal normally sends data, and the first terminal can receive the PSFCH.

[0107] Among them, for the first terminal to receive K physical sidelink feedback channels, it can be within a preset time period, such as the statistical time length determined by the first terminal, and it can be determined whether the feedback information of the sent data is received within the statistical time window. The length of the statistical time window can be obtained through the following methods:

[0108] 1) The base station configures the statistical time window;

[0109] 2) The terminal selects the statistical time window by itself.

[0110] Among them, the length of the statistical time window can meet some or all of the following conditions:

[0111] 1) The length of the statistical time window is an integer multiple of the discontinuous reception period of the first terminal UE1;

[0112] 2) It is configured on the resource pool;

[0113] 3) The first terminal UE1 selects the length according to the service type or the priority information of the service.

[0114] 703. The first terminal determines the activation time of the second terminal according to the reception time of the K physical sidelink feedback channels;

[0115] Among them, by statistically analyzing the reception times of multiple physical sidelink feedback channels, the activation time of the second terminal can be determined.

[0116] Further, step 703 may further include statistically analyzing the status of the feedback information of the second terminal to determine the DRX cycle of the second terminal.

[0117] The status of the feedback information of the second terminal may include that the second terminal does not send feedback information. For example, when receiving feedback information, if the first terminal does not receive the feedback information, it can be determined that when the first terminal sends the corresponding physical sidelink shared channel, the second terminal may be in the dormant period.

[0118] Further, if the second terminal does not feedback the HARQ information for the continuous Y physical sidelink shared channels periodically sent by the first terminal, it can be determined that when the first terminal sends the corresponding physical sidelink shared channel, the second terminal is in the dormant period, where Y is a positive integer greater than or equal to 1. Thereby, the reliability of the solution can be improved, and the inaccurate judgment caused by missed detection and false alarm can be reduced.

[0119] The status of the feedback information of the second terminal may also include that the second terminal sends feedback information. For example, when receiving feedback information, if the first terminal receives the feedback information, it can be determined that when the first terminal sends the corresponding physical sidelink shared channel, the second terminal is in the active period.

[0120] That is to say, by statistically analyzing the positions of the ACK / NACK received after sending the PSCCH / PSSCH and the DTX state without receiving feedback in the time window, the activation time and the discontinuous reception cycle of the DRX of the second terminal UE2 can be determined according to the above information;

[0121] Specifically, if ACK / NACK is not received (i.e., the DTX state), the corresponding PSCCH / PSSCH is not within the DRX activation time; if ACK / NACK is received, the corresponding PSCCH / PSSCH may be within the DRX activation time.

[0122] By determining the minimum time slot set according to all ACK / NACK and the reserved period or service period, and determining the longest continuous time slot set within the activation time, it is the activation time of the discontinuous reception cycle of the second terminal.

[0123] Specifically, such as Figure 8As shown, within the statistical time window, UE1 sequentially sends PSCCH / PSSCH1, PSCCH / PSSCH2, PSCCH / PSSCH3, PSCCH / PSSCH4, PSCCH / PSSCH5, PSCCH / PSSCH6, and PSCCH / PSSCH7 to UE2.

[0124] Among them, UE1 receives the feedback from UE2. If it receives PSFCH3, PSFCH4, PSFCH5, and PSFCH6, the corresponding PSCCH / PSSCH is within the DRX activation time range of UE2;

[0125] For the non-periodic transmission of PSSCH that receives the corresponding HARQ feedback information, such as PSFCH3, the PSSCH is shifted according to the configured reservation period or service period until it overlaps with the time-domain resources of other periodically transmitted PSSCHs or is time-domain continuous, as Figure 8 shown, then the time-domain resources of the shifted PSSCH are also within the DRX activation time.

[0126] If UE1 does not receive PSFCH 1, PSFCH2, and PSFCH7 (DTX state), the corresponding PSCCH / PSSCH is not within the DRX activation time of UE2;

[0127] Optionally, the method further includes step 704, specifically: 704. The first terminal sends the physical side line control channel and the physical side line shared channel according to the activation time of the second terminal.

[0128] Among them, step 704 may or may not be executed, and this application does not make specific limitations on this.

[0129] Among them, the first terminal sending the physical side line shared channel according to the activation time of the second terminal includes: the first terminal adjusts the discontinuous reception period of the first terminal according to the activation time of the second terminal so that the first terminal can receive the message sent by the second terminal.

[0130] After determining the DRX activation time range, UE1 can adjust its own activation period or switch the DRX state, etc., so as to be able to receive the message sent by UE2.

[0131] Among them, the specific implementation means for adjusting the discontinuous reception period of the first terminal can refer to Figure 2 the description of the embodiments shown, which will not be elaborated here. It can also be in any other form, and this solution does not make specific limitations on this.

[0132] In an embodiment of the present application, the first terminal can determine the activation time of the second terminal based on the feedback information sent by the second terminal, and then the first terminal adjusts its discontinuous reception period so as to receive the message sent by the second terminal. By adopting this means, it is possible to avoid the missed detection of PSFCH caused by the dormant period, thereby avoiding unnecessary retransmissions, reducing the delay, and improving the reliability of the system.

[0133] An embodiment of the present application further provides a method for configuring a discontinuous reception period. The first terminal can send a message to other terminals to indicate the discontinuous reception period information of the first terminal, where the discontinuous reception period information includes DRX offset, period, etc. The method includes:

[0134] The first terminal sends a first message to M second terminals, and the first message carries the discontinuous reception period information of the first terminal, so that any one of the M second terminals sends a second message to the first terminal according to the discontinuous reception period information of the first terminal. That is to say, the discontinuous reception period information is used to instruct any one of the M second terminals to send a second message to the first terminal according to the discontinuous reception period information of the first terminal, and M is a positive integer.

[0135] As a first implementation manner, the first terminal can carry the discontinuous reception period information in the Master Information Block (MIB) or the System Information Block (SIB) and send it out in a broadcast manner; at this time, M can be 1 or an integer greater than 1. Optionally, when sending the above information, the first terminal can scramble the discontinuous reception period information with its own source ID and then send it. For example, the cyclic redundancy check (CRC) of the encoded information is scrambled with the source ID. The purpose of doing this is to limit the detection of this part of the information to only the UEs interested in the first terminal.

[0136] As a second implementation manner, the first terminal can multicast the common DRX information, that is, the common DRX cycle information, to the UEs within the group. The first terminal can send the above information in a multicast manner. Among them, the common DRX cycle information is used to notify the UEs within the group that they need to remain active at least in the common DRX activation period state to receive information. The above common DRX cycle information can be carried in the sidelink control information (SCI) or sent in the PSSCH.

[0137] As a third implementation manner, the first terminal may also send discontinuous reception period information in a unicast scenario. The first terminal may carry the discontinuous reception period information in PC5-RRC.

[0138] Among them, any second terminal sending a second message to the first terminal according to the discontinuous reception period information of the first terminal may be that any second terminal realizes reception by adjusting its own discontinuous reception period.

[0139] Among them, when using the unicast method and the multicast method, UE1 may determine whether UE2 can be adjusted according to whether the corresponding feedback is received.

[0140] Further, when sending the above information, the first terminal may configure a certain number of repetitions and a transmission interval gap. As Figure 9 shown, it is exemplified to send 3 times repeatedly, where the gap may take an integer from 0 to 7. Consistent with this embodiment, an embodiment of the present application also provides a method for configuring a discontinuous reception period. The method includes:

[0141] The second terminal receives a first message sent by the first terminal, and the first message carries the discontinuous reception period information of the first terminal;

[0142] The second terminal sends a second message to the first terminal according to the discontinuous reception period information of the first terminal.

[0143] In the embodiment of the present application, the terminal sends out its own discontinuous reception period so that other terminals can know its discontinuous reception period information, thereby ensuring sidelink communication between different terminals.

[0144] An embodiment of the present application also provides a first terminal for configuring a discontinuous reception period. The first terminal is used for:

[0145] If the upcoming physical sidelink feedback channel is within the dormant period of the discontinuous reception period of the first terminal, adjust the discontinuous reception period, where the physical sidelink feedback channel carries hybrid automatic repeat request information of the second terminal in response to the physical sidelink shared channel, and the physical sidelink shared channel is a sidelink shared channel sent by the first terminal to the second terminal;

[0146] Receive the physical sidelink feedback channel.

[0147] Among them, when the first terminal adjusts the discontinuous reception period, it is specifically used for:

[0148] Trigger a first timer no later than the start time of the physical sidelink feedback channel, where within the timing range of the first timer, the first terminal is within the active period of the discontinuous reception cycle, and the timing range of the first timer is not less than the time domain resource length of the physical sidelink feedback channel.

[0149] Alternatively, when the first terminal adjusts the discontinuous reception cycle, it is specifically configured to:

[0150] Trigger a first timer no later than the start time of the physical sidelink feedback channel, where within the timing range of the first timer, the first terminal can receive any one of the physical sidelink feedback channel, the physical sidelink feedback channel and the physical sidelink control channel, and the physical sidelink feedback channel and the physical sidelink shared channel.

[0151] Wherein, before the first terminal triggers the first timer, the first terminal is within the dormant period of the discontinuous reception cycle.

[0152] Wherein, before the first terminal adjusts the discontinuous reception cycle, the first terminal is further configured to:

[0153] Confirm that the interval between the end time of the active period of the discontinuous reception cycle and the start time of the physical sidelink feedback channel is greater than a first threshold.

[0154] Before the first terminal triggers the first timer, the first terminal is within the active period of the discontinuous reception cycle.

[0155] Wherein, before the first terminal adjusts the discontinuous reception cycle, the first terminal is further configured to:

[0156] Confirm that the interval between the end time of the active period of the discontinuous reception cycle and the start time of the physical sidelink feedback channel is not greater than a first threshold.

[0157] On the other hand, the present application further provides a first terminal for configuring a discontinuous reception cycle, and the first terminal is configured to:

[0158] Send a physical sidelink control channel and a physical sidelink shared channel to a second terminal;

[0159] Receive K physical sidelink feedback channels, where the physical sidelink feedback channels carry hybrid automatic repeat request information of the second terminal in response to the physical sidelink shared channel, and K is an integer greater than 1;

[0160] Determine the activation time of the second terminal according to the reception times of the K physical sidelink feedback channels;

[0161] Transmit the physical sidelink control channel and the physical sidelink shared channel according to the activation time of the second terminal.

[0162] Wherein, when the first terminal transmits the physical sidelink shared channel according to the activation time of the second terminal, it is specifically configured to:

[0163] Adjust the discontinuous reception period of the first terminal according to the activation time of the second terminal, so that the first terminal can receive the message sent by the second terminal.

[0164] This application also provides a first terminal for configuring a discontinuous reception period. The first terminal is used for:

[0165] Send a first message to M second terminals. The first message carries the discontinuous reception period information of the first terminal, so that any second terminal among the M second terminals can send a second message to the first terminal according to the discontinuous reception period information of the first terminal, where M is a positive integer.

[0166] Wherein, the first message is a master system information block MIB message; or, the first message is a system information block SIB message.

[0167] When M is 1, the first message is a PC5-RRC message.

[0168] Furthermore, this application also provides a second terminal for configuring a discontinuous reception period. The second terminal is used for:

[0169] Receive a first message sent by a first terminal. The first message carries the discontinuous reception period information of the first terminal;

[0170] Send a second message to the first terminal according to the discontinuous reception period information of the first terminal.

[0171] This application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method described above.

[0172] In several embodiments provided by this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical or other form.

[0173] The unit described as a separation component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0174] In addition, in each embodiment of the application, each functional unit can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software program module.

[0175] If the above-mentioned integrated unit is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on such an understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of this application. And the aforementioned memory includes: USB flash drive, read-only memory (ROM), random access memory (RAM), mobile hard disk, magnetic disk or optical disc and other media that can store program codes.

[0176] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing relevant hardware through a program. This program can be stored in a computer-readable memory, and the memory can include: flash drive, read-only memory, random access memory, magnetic disk or optical disc, etc.

[0177] The above has introduced the embodiments of this application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A method for configuring a discontinuous reception period, characterized in that, Including: If the physical sidelink feedback channel to be received is within the dormant period of the discontinuous reception period of the first terminal, the first terminal adjusts the discontinuous reception period, where the physical sidelink feedback channel carries hybrid automatic repeat request information of the second terminal in response to the physical sidelink shared channel, and the physical sidelink shared channel is the sidelink shared channel sent by the first terminal to the second terminal; The first terminal receives the physical sidelink feedback channel.

2. The method according to claim 1, characterized in that, The first terminal adjusting the discontinuous reception period includes: The first terminal triggers a first timer no later than the start time of the physical sidelink feedback channel, where within the timing range of the first timer, the first terminal is in the active period of the discontinuous reception period, and the timing range of the first timer is not less than the time domain resource length of the physical sidelink feedback channel.

3. The method according to claim 1, wherein The first terminal adjusting the discontinuous reception period includes: The first terminal triggers a first timer no later than the start time of the physical sidelink feedback channel, where within the timing range of the first timer, the first terminal can receive any one of the physical sidelink feedback channel, the physical sidelink feedback channel and the physical sidelink control channel, and the physical sidelink feedback channel and the physical sidelink shared channel.

4. The method according to claim 2 or 3, characterized in that, Before the first terminal triggers the first timer, the first terminal is in the dormant period of the discontinuous reception period.

5. The method according to claim 4, wherein Before the first terminal adjusts the discontinuous reception period, the method further includes: The first terminal confirms that the interval between the end time of the active period of the discontinuous reception period and the start time of the physical sidelink feedback channel is greater than a first threshold.

6. The method according to claim 2 or 3, characterized in that, Before the first terminal triggers the first timer, the first terminal is in the active period of the discontinuous reception period.

7. The method according to claim 6, characterized in that Before the first terminal adjusts the discontinuous reception period, the method further includes: The first terminal confirms that the interval between the end time of the active period of the discontinuous reception period and the start time of the physical sidelink feedback channel is not greater than a first threshold.

8. A method for configuring a discontinuous reception period, characterized in that, Including: The first terminal sends a first message to M second terminals, the first message carrying the discontinuous reception period information of the first terminal, so that any one of the M second terminals sends a second message to the first terminal according to the discontinuous reception period information of the first terminal, where any one of the second terminals sends the second message to the first terminal based on the adjusted discontinuous reception period, and the adjusted discontinuous reception period is determined based on the discontinuous reception period information of the first terminal, and M is a positive integer.

9. The method according to claim 8, wherein The first message is a master system information block MIB message; or, the first message is a system information block SIB message.

10. The method according to claim 8, characterized in that When M is 1, the first message is a PC5-RRC message.

11. A method for configuring a discontinuous reception period, characterized in that, Including: The second terminal receives the first message sent by the first terminal, the first message carrying the discontinuous reception period information of the first terminal; The second terminal sends a second message to the first terminal according to the discontinuous reception cycle information of the first terminal, where the second terminal sends the second message to the first terminal based on an adjusted discontinuous reception cycle, and the adjusted discontinuous reception cycle is determined based on the discontinuous reception cycle information of the first terminal.

12. A first terminal configured with a discontinuous reception period, characterized in that, The first terminal includes means for: If a physical sidelink feedback channel to be received is within the dormant period of the discontinuous reception cycle of the first terminal, adjusting the discontinuous reception cycle, where the physical sidelink feedback channel carries hybrid automatic repeat request information of the second terminal in response to a physical sidelink shared channel, and the physical sidelink shared channel is a unit of the sidelink shared channel sent by the first terminal to the second terminal; And includes means for receiving the physical sidelink feedback channel.

13. The terminal according to claim 12, wherein The first terminal further includes, when adjusting the discontinuous reception cycle, specifically for: Triggering a first timer no later than the start time of the physical sidelink feedback channel, where within the timing time range of the first timer, the first terminal is within the active period of the discontinuous reception cycle, and the timing time range of the first timer is not less than the unit of the time domain resource length of the physical sidelink feedback channel.

14. The terminal according to claim 12, wherein The first terminal further includes, when adjusting the discontinuous reception cycle, specifically for: Triggering a first timer no later than the start time of the physical sidelink feedback channel, where within the timing time range of the first timer, the first terminal can receive any one of the physical sidelink feedback channel, the physical sidelink feedback channel and the physical sidelink control channel, and the physical sidelink feedback channel and the physical sidelink shared channel.

15. The terminal according to claim 13 or 14, characterized in that, Before the first terminal triggers the first timer, the first terminal is within the dormant period of the discontinuous reception cycle.

16. The terminal according to claim 15, wherein Before the first terminal adjusts the discontinuous reception cycle, the first terminal further includes means for: Confirming that the interval between the end time of the active period of the discontinuous reception cycle and the start time of the physical sidelink feedback channel is greater than a first threshold.

17. The terminal according to claim 13 or 14, characterized in that, Before the first terminal triggers the first timer, the first terminal is within the active period of the discontinuous reception cycle.

18. The terminal according to claim 17, wherein Before the first terminal adjusts the discontinuous reception cycle, the first terminal further includes means for: Confirming that the interval between the end time of the active period of the discontinuous reception cycle and the start time of the physical sidelink feedback channel is not greater than a first threshold.

19. A first terminal configured with a discontinuous reception period, characterized in that, The first terminal includes means for: Sending a first message to M second terminals, where the first message carries the discontinuous reception cycle information of the first terminal, so that any one of the M second terminals sends a second message to the first terminal according to the discontinuous reception cycle information of the first terminal, where any one of the second terminals sends the second message to the first terminal based on an adjusted discontinuous reception cycle, and the adjusted discontinuous reception cycle is determined based on the discontinuous reception cycle information of the first terminal, and M is a positive integer.

20. The terminal according to claim 19, wherein The first message is a master system information block MIB message; alternatively, the first message is a system information block SIB message.

21. The terminal according to claim 19, wherein When M is 1, the first message is a PC5-RRC message.

22. A second terminal configured with a discontinuous reception period, characterized in that, The second terminal includes means for: Receiving a first message sent by a first terminal, the first message carrying a unit of the discontinuous reception cycle information of the first terminal; Further includes means for sending a second message to the first terminal according to the discontinuous reception cycle information of the first terminal, wherein the second terminal sends the second message to the first terminal based on an adjusted discontinuous reception cycle, and the adjusted discontinuous reception cycle is determined based on the discontinuous reception cycle information of the first terminal.

23. A computer-readable storage medium storing a computer program, the computer program being executed by a processor to implement the method according to any one of claims 1 to 11.

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